formatsMu.Unlock()
}

// A reader is an io.Reader that can also peek ahead.
type reader interface {
	io.Reader
	Peek(int) ([]byte, error)
}

// asReader converts an io.Reader to a reader.
func asReader(r io.Reader) reader {
	if rr, ok := r.(reader); ok {
		return rr
	}
	return bufio.NewReader(r)
}

// match reports whether magic matches b. Magic may contain "?" wildcards.

        UriTextResource resource = new UriTextResource('<display-name>', file, resolver)

        then:
        resource.exists
        !resource.hasEmptyContent
        resource.text == '<content>'
        resource.asReader.text == '<content>'
    }

    def assumesFileIsEncodedUsingUtf8() throws IOException {
        when:
        file.setText('\u03b1', 'utf-8')

        1 * target.text >> 'content'
        0 * target._
    }

    def fetchesAndCachesContentWhenContentQueriedAsReader() {
        when:
        assert resource.asReader.text == 'content'
        assert resource.exists
        assert resource.asReader.text == 'content'

        then:
        1 * target.text >> 'content'
        0 * target._
    }

    def fetchesAndCachesContentWhenContentIsEmptyIsChecked() {

    def "can use char source text resource"() {
        when:
        def r = new CharSourceBackedTextResource("display name", CharSource.wrap("foo"))

        then:
        r.asString() == "foo"
        r.asReader().text == "foo"
    }

    TextResource resource

    def "read as string"() {
        expect:
        resource.asString() == "contents"
    }

    def "read as reader"() {
        expect:
        def reader = resource.asReader()

        try {
            reader.readLine() == "contents"
        } finally {
            reader.close()
        }
    }

    def "read as file"() {
        expect:

                <tr>
                    <td>Name</td>
                </tr>
            </thead>
            <tr>
                <td>asString</td>
            </tr>
            <tr>
                <td>asReader</td>
            </tr>
            <tr>
                <td>asFile</td>
            </tr>
        </table>
    </section>

      lines.add(line);
    }
    r.close();
    return lines;
  }

  private static List<String> readUsingReader(String input, int chunk, boolean asReader)
      throws IOException {
    Readable readable =
        asReader ? getChunkedReader(input, chunk) : getChunkedReadable(input, chunk);
    LineReader r = new LineReader(readable);
    List<String> lines = Lists.newArrayList();
    String line;

      lines.add(line);
    }
    r.close();
    return lines;
  }

  private static List<String> readUsingReader(String input, int chunk, boolean asReader)
      throws IOException {
    Readable readable =
        asReader ? getChunkedReader(input, chunk) : getChunkedReadable(input, chunk);
    LineReader r = new LineReader(readable);
    List<String> lines = Lists.newArrayList();
    String line;

    @Override
    public String toString() {
        return getDisplayName();
    }

    @Override
    public String asString() {
        return string;
    }

    @Override
    public Reader asReader() {
        return new StringReader(string);
    }

    @Override
    public File asFile(String charset) {
        File file = tempFileProvider.createTemporaryFile("string", ".txt", "resource");
        try {

        try {
            return charSource.read();
        } catch (IOException e) {
            throw ResourceExceptions.readFailed(displayName, e);
        }
    }

    @Override
    public Reader asReader() {
        try {
            return charSource.openStream();
        } catch (IOException e) {
            throw ResourceExceptions.readFailed(displayName, e);
        }
    }

    @Override